Spirally-crimped hoop



(No Model.)

L. L. FROST.

SPIRALLY GRIMPED HOOP.

No. 426,258. Patented Apr. 22, 1890.

A TTORNEYS.

UNITE STATES PATENT OFFICE.

LEONARD L. FROST, OF BARADA, NEBRASKA.

SPlRALLY-CRIMPED HOOP.

SPECIFICATION forming part of Letters Patent No. 426,258, dated April22, 1890.

Application filed September 16, 1889. serial No. 323,986. (No model.)

To aZZ whom it may concern.-

Be it known that I, LEONARD L. Fnosr, of Barada, in the county ofRichardson and State of l\ ebraska-, have invented a new and 1111-proved Hoop, of which the following is a full, clear, and exactdescription.

This invention relates to hoops of the class employed in coopers ware,the object of the invention being to prevent the displacement of thehoop in case of the shrinkage of the staves; and to the end named theinvention consists, essentially, of a hoop formed with a spiral groove,which extends in an unbroken or in broken sections from end to end ofthe band from which the hoop is formed, the crimp by preferencecommencing above the vertical center of such band and ending bypreference below such center.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a perspective View of a pail provided with hoops whichembody my invention. Fig. 2 isa perspective view of a hoop formed with acontinuous spiral crimp. Fig. 3 is a perspective view of a portion of ahoop wherein the spiral crimp is formed in sections. Fig. 4 is across-sectional view on line 4 4 of Figs. 2 and 3, and Fig. 5 is across-sectional view on line 5 5 of Fig. 2.

In the drawings, represents a band or strip of metal, in the outer faceof which there is formed a spiral crimp or groove 11, the metal beingbodily pressed inward, thus making an internal bead. After the crimp hasbeen formed as above described, the ends of the band are united in anyproper manner to form a hoop. In Figs. 1 and 2 the crimp 11 iscontinuous from end to end of the band, but in Fig. 3 the crimp isformed in broken sections 2, the ends of said sections being open andthe sections being arranged spi rally. In practice I prefer that theleading end of the continuous spiral crimp shown in Figs. 1 and 2 shouldbe open, as by so forming the crimp the surface of the staves of thepail or other article of coopers ware in connection with which the hoopis to be employed will be cut away thereby as the hoop is advanced uponthe pail or other article, thus leaving a spirally-inclined groove 3, asshown in Fig. 1.

The open-ended spiral crimp is especially adapted for hard woods thatrequire cutting; but with soft woods the wood fiber would be compressedand there would be no necessity for opening the ends of the crimp.

The construction of hoop shown in Fig. 3 is best adapted for use inconnection with hard woods. I have shown only one line of crimps in thedrawings but I might have other lines of crimps formed in the hoops. Bymeans of such a hoop I form a groove by simply turning onthe wood,whereas in other constructions known to me the groove is first formedand then the hoop is placed in the groove, this being the case with wirehoops or band-hoops in which there is a straight crimp.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. Ahoop formed with an inwardly-projecting spiralcrimp, substantially as described.

2. A hoop formed with an inwardly-projecting spiral crimp leading from apoint above the vertical. center of the hoop to a point below suchcenter.

3. A hoop formed with an inwardly-projecting spiral crimp, the leadingend of which is open.

4. A hoop formed With an inwardly-projecting spiral crimp, such crimpbeing formed in sections.

LEONARD L. FROST.

\Vitnesses:

CHARLES DOCKHORP, JOACHIM' EoKLoFF.

